RNS Series and RWS Series vortex steam flowmeters

RNS Series (insertion) and RWS Series (wafer) vortex steam flowmeters are designed for measuring noncondensing steam and saturated process steam at pressures up to 150 psi. They are suitable for use in boiler-monitoring and energy-related applications, as well as for building and facilities management. The meters have no moving parts and are virtually maintenance-free. The loop-powered devices use standard HART communications protocols for easy field programming and system integration. They operate over a temperature range of –20°F to 366°F, with an accuracy of ±1% of reading and repeatability of 0.5%. They are pre-calibrated for specific uses, and can be rescaled in the field using PC software that is included. The RNS Series flowmeter is available for pipe sizes from 6 in. to 72 in. (152–1,829 mm), has a 35:1 turndown ratio, and can be configured for mass flow measurements. The RWS flowmeter is made of Type 316 stainless steel wetted parts and is available in five sizes for flange mounting in pipes from 0.5 in. to 4 in. It features a very small bluff bar for little or no pressure drop and National Institute of Standards and Technology (NIST)-traceable calibration.